A Seattle man recently released from prison after he was caught looking online for children to rape may be headed back for an identical crime.

Having served a 3 ½ year sentence for offering to pay a police officer for sex with a 13-year-old, Thomas Rutledge Spencer is alleged to have gotten right back to it following his release from prison earlier this year.

King County prosecutors claim Spencer placed an advertisement online expressing his desire for a “daddy-daughter” sexual arrangement with a young girl. Spencer, 65, is alleged to have sent several graphic emails to an undercover detective in which he offered to pay $50 for sex with a 15-year-old girl.

Also known as Howard Kivley, Spencer previously pleaded guilty to attempted child molestation after he was caught in 2011 responding to an advertisement posted by a detective posing as a parent hoping to pimp a 13-year-old child.

Writing the court, Senior Deputy Prosecutor Carla Carlstrom noted Spencer previously failed two polygraph tests when asked whether he’d molested children. Though he could have been held indefinitely, Spencer was released after serving 40 months in prison, the minimum term, even after an evaluator ruled him unfit for post-release treatment.

“This defendant poses an extreme danger to the community as he is an untreated sex offender who has been caught twice in four years attempting to have sex with young girls,” Carlstrom said in court papers.

Writing the court, the detective said the advertiser described himself as a man looking for a mother willing to let him have sex with her daughter. The detective responded and set up a meeting with Spencer.

According to charging papers, Spencer was arrested after arriving at the meeting location and subsequently admitted he hoped to pay for sex with a child.

As it happened, the same detective caught Spencer in October 2010. Two hours after the detective posted an ad posing as the parent of a 13-year-old girl, Spencer was there offering to pay for sex with the child.

In that investigation, Spencer sent hundreds of emails to the detective graphically describing what he hoped to do to the child. He was arrested after coming to a meeting with the detective, jailed and ultimately convicted.

Spencer has now been charged with attempted commercial sexual abuse of a minor. He also faces revocation of his parole, and could be held indefinitely. He remains jailed.